The to hook is just a small terminal wire connector painted red. As for the tires, it super easy. Just dont put them on all the way... You push the tire from the back side and when they hit the front lip then your good to go. The tires I use are super tight, you actually have to boil them to get them on all the way. Since they are super tight they will hold their place just like that. The mess is just a strainer from the grocery store, like ones for pasta or when you wash vegetables. Its just kinda smashed to give it the diamond mess look.